Ferdağ ÇOLAK, Semra İLHAN, Fatma Zerrin ERDEMGİL, Filiz SAVAROĞLU, Filik Cansu İŞÇEN

Antimicrobial activity of Palustriella communtata (Hedw.) ochyra extracts (Bryophyta)

Bu çalışma Eskişehir (Türkiye) Sündiken dağlarından toplanan Palustriella commutata (Hedw.) Ochyra ekstraktlarının antimikrobiyal aktivitesi üzerinedir. Ekstraktlar aseton ve metanol çözücüleriyle reflüks altında hazırlanmıştır. Ektraktların antimikrobiyal aktivitesi onbir bakteri, bir maya ve sekiz küfe karşı disk difüzyon yöntemi kullanılarak değerlendirilmiştir. Antimikrobiyal test sonuçlan aseton ekstraktimn test bakterilerine karşı potansiyel bir aktiviteye sahip olduğunu göstermiştir. Denenen gram-pozitif bakterilerden bazıları {Bacillus mycoides, B. cereus, B. subtilis ve Micrococcus luteus) aseton ekstraktına duyarlı iken, gram-negatif bakterilerin (Klebsiella pneumoniae, Yersinia enterocolitica, Pseudomonas aeruginosa, Escherichia coli ve Enterobacter aerogenes) hepsi duyarlıydı. Her iki ekstrakt maya ve küf suşlarına karşı inaktifti. Elde edilen bulgular P. commutata' nın gram-negatif ve gram-pozitif bakterilere karşı etkili olan yeni bir antimikrobiyal bileşiğe sahip olma olasılığını ileri sürmektedir.

Palustriella commutata (Hedw.) ochyra (Bryophyta) ekstraktının antimikrobiyal aktivitesi

The present study describes the antimicrobial activity of 2 extracts of Palustriella commutata (Hedw.) Ochyra, collected from the Sündiken Mountains, Eskişehir, Turkey. These extracts were first prepared with acetone and methanol solvents under reflux. The antimicrobial activity of the extracts was then assessed using the disc diffusion method against 11 bacteria, 1 yeast, and 8 moulds. The antimicrobial test results revealed that the acetone extract had a potential activity against 9 test bacteria. While some gram-positive bacteria tested were sensitive (Bacillus mycoides, B. cereus, B. subtilis, and Micrococcus luteus), all gram-negative bacteria tested (Klebsiella pneumoniae, Yersinia enterocolitica, Pseudomonas aeruginosa, Escherichia coli, and Enterobacter aerogenes) were sensitive to the acetone extract. Both extracts were inactive against yeast and mould strains. The results presented in this paper suggest the possibility that P. commutata possesses a new antimicrobial compound that has an effect against gram-negative and gram-positive bacteria.

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